Event: Mini League

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Opponent Rating Result
David Halpin 1173 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

773 = (1173 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Kenneth L Marsden 1391 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

991 = (1391 + 400 * (0 - 1)) / 1)